diff --git a/requirements.txt b/requirements.txt
index 5c043913a..828d31e9d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 setuptools>=33.1.1
 Werkzeug>=1.0.1,<3.0.0
 wheel>=0.37.1
-gunicorn>=21.2.0
+gunicorn==20.1.0
 requests>=2.27.1
 urllib3>=1.21.1
 flask>=2.0.3,<3.0.0